Bibliographic Citation
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Title | Reservoir quality units in Rotliegende sandstones of north Germany |
Creator/Author | Kraft, T. ; Hock, M. (BEB Erdgas und Erdol GmbH, Hannover (Germany)) |
Publication Date | 1993 Sep 01 |
OSTI Identifier | OSTI ID: 6914806 |
Report Number(s) | CONF-9310237-- |
Other Number(s) | ISSN0149-1423; CODEN: AABUD2 |
Resource Type | Conference |
Specific Type | Journal Article |
Resource Relation | AAPG Bulletin (American Association of Petroleum Geologists) ; Vol/Issue: 77:9; American Association of Petroleum Geologists (AAPG) mid-continent section meeting; 10-12 Oct 1993; Amarillo, TX (United States) |
Subject | 030200 -- Natural Gas-- Reserves, Geology, & Exploration; RESERVOIR ROCK-- FORECASTING;RESOURCE ASSESSMENT-- CALCULATION METHODS;SEDIMENTATION-- DATA ANALYSIS; DIAGENESIS;FEDERAL REPUBLIC OF GERMANY;MINERALOGY;NATURAL GAS;PERMEABILITY;PERMIAN PERIOD;POROSITY;SANDSTONES;SEDIMENTARY ROCKS |
Related Subject | DEVELOPED COUNTRIES;ENERGY SOURCES;EUROPE;FLUIDS;FOSSIL FUELS;FUEL GAS;FUELS;GAS FUELS;GASES;GEOLOGIC AGES;PALEOZOIC ERA;ROCKS;SEDIMENTARY ROCKS;WESTERN EUROPE |
Description/Abstract | The major producing gas fields in the Permian Rotliegende are situated in an approximately 50 km wide, northwest-southeast-striking belt from Groningen to north Hannover.^The main Rotliegende reservoirs are shoreline and dune sediments in the Wustrow, Dethlingen, and Schneverdingen sandstones and are situated at depths between 3500 and 5000 m. Porosities range from 8-18%, with permeabilities of 0.001-800 md, depicting a strong degree of reservoir heterogeneity even at field scale.^Sedimentary facies and diagenesis are recognized as the main reservoir controlling factors.^Log-derived mineralogy and diagenesis can be calibrated to the cores and then extrapolated to the uncored intervals.^The method is based on cluster and principal component analysis and combines the whole suite of petrographical, geochemical, and petrophysical laboratory measurements with the log data.^Thereby, the diagenetic features of reservoir sandstones can be evaluated throughout the uncored intervals, and lithological variations in nonreservoir sections, fanglomerates, volcanites, and mudstones can be detected.^The sedimentary environment is interpreted mainly from dipmeter.^Eventually, the method also should reduce coring expenses.^From crossplots of log-derived diagenesis and facies parameters vs. permeability, porosity, or saturation, reservoir quality units can be identified and tied to seismic attributes.^Mapping these units allow one to better distinguish pay areas and explain failures. |
Country of Publication | United States |
Language | English |
Format | Pages: 1638 |
System Entry Date | 2001 May 13 |
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